Chimney-cowl and ventilator



` lINrrnn Srnrns Barn-Nr @tirent GEORGE FISCHER, OF QUINGY, ILLINOIS.

CHlMNEY-COWL AND VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 330,883, dated November 24, 1:885.

Application tiled September 18, 1885. Serial No. 177,494.

To all whom it may can/cern.:

Be it known that I, Gaone-n FISCHER, a citizen of the United States, residing at Quincy, in the county of Adams and State of Illinois, have invented certain new and useful Improvements in Chimney-@owls and Ventilators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this speciiication.

rlChe object of my invention is to protect the draft of the chimney-flue by directing away the wind therefrom, whether the current is upward, lateral, or downward, and in such a way as to increase the draft of said flue.

To this end the details of my invention will be described below, and pointed out in the claims.

In the drawings, Figure 1 is a side elevation. Fig. 2 is a vertical section.

Like letters refer to like parts.

A is the chimney-Hue, the orifice of which is bent outward to form a flaring or oblique flange, a. Some distance below the said orifice is an air-tight conical frustum, B, and above this and about the orifice ofthe flue are two conic frustums united at their smaller bases and extending partly above and partly below said orifice, forming a double-coneshaped ring, C. The ange B, the flaring ue A, and the ring C thus formawind-channel, l, hereinafter referred to. Above the conical frustums is placed the open-bottom cone D,of somewhat smaller diameter, though larger than that of fine A, and so as to leave a circulating wind, die., escape, 2, between them. About the cone is a guard or conic frustum, E, which extends from some distance below the apex of the former down to about the level of the upper rim of the ring C, and being sufficiently away fromthe cone and ring C to form the wind, rain, Src., channel 3.

In Fig. 2 the manner of bracing the parts together is seen. There are three sets of (No model.)

braces in all at suitable intervals, and one 5o only will be described. The brace b extends from the cone to the ring C and the iiue A, holding by bolts all these parts together. 'Ihe bolts through the upper end of the brace b also pass through one end of a Z-brace, Zi, the other end of the latter being bolted to the guard E, said brace b connecting the guard to the cone, so as to leave the channel 3,'above mentioned.

The mode of operation will best describe the functions of the elements of the device. The `frustum B will prevent an upward wind from entering4 the cowl to choke or eddy about the iue. A lateral wind will be deflected by ring C, or forced up the opening l and out at opening 2, causing an updraft in the flue. By flaring the top of the nue the smoke will deflect out obliquely to meet the current of air, but will not impinge with it. A downdraft on the cone will pass through opening 3, causing an updraft through opening 2. The guard E prevents a downdraft from blowing into the opening 2, and any updraft striking under it would pass up opening 3, aiding the draft of the flue. Much of the rain is shed by this guard; but that falling on the cone passes to ring C and off from frustum B.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is- .i

l. The combination, with the flaringmouthed iue, of the conic frustum having its upper rim fastened air-tight some distance below the iiare of the flue, the double-coneshaped ring of larger diameter than the duemouth, the open-bottomed cone of greater diameter than the mouth of the flue, and the outer guard, mostly covering the cone and extending nearly down to the upper section of vsaid ring, and forming with the cone a wind-channel, as set forth.

2. The combination, with the flue A, having flaring mouth a, of the conic frustum B, fastened air-tight some distance belowv the liuc-mouth, the double-cone-shaped ring C, of greater diameter than the flue-mouth, and forming with ue A and frustum B a windchannel, 1, the open-bottomed eone D, ar- In testimony whereof Iax my signature in ranged next above said ring C to leave an presence of two Witnesses.

opening, 2, between them, and the guard E,

protecting said widening and forming with the GEORGE FISCHER. @one a windohanne1, 3, also a slight circuler opening between the bottom of said guard Witnesses:

'andthe upper section of ring C, al the parts L. E. EMMONS,

being held together by braces b b', as set forth. A. W. WELLS. 

